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Sr. Java Full Stack Engineer

Nexiva Inc.New York, NY🇺🇸United StatesPosted Sep 24, 2026

Why This Role Stands Out

As a Sr. Java Full Stack Engineer at Nexiva Inc., you'll drive the development of innovative AI healthcare solutions, shaping greenfield products from concept to launch and scaling them to millions of users. This role is perfect for experienced engineers who thrive in a fast-paced startup environment and enjoy significant autonomy, offering a hybrid work model for excellent work-life balance. Join an early-stage team and make a substantial impact as you help define the company's technical future.

Quick Overview

Seniority
Mid Senior
Work mode
On Site
Location
New York, NY, United States
Posted
22 hours ago
DockerMySQLNode.jsAWSJavaLLMPostgreSQLReactTypeScript

Job Description

Position : Sr. Java Full Stack Engineer
Location : Midtown Manhattan, NY Hybrid 4 days/week in office (Monday Thursday)
Duration : Full Time

Description

We are looking for a Senior Full Stack Engineer with 3-5+ years of experience to join a fast-growing AI healthcare startup and own projects that span the entire stack. You will be building greenfield products that automate the healthcare recruiting pipeline, from sourcing to onboarding, at a company already powering thousands of candidate interactions monthly and scaling toward millions.

What You Will Be Doing

  • Own and deliver greenfield projects across the full stack, including backend, infrastructure, and frontend.
  • Evolve and scale platform architecture as the product grows from thousands to millions of candidate interactions.
  • Build and ship end-to-end features in a TypeScript-first environment on serverless AWS infrastructure.
  • Collaborate directly with engineering leadership and company founders with short feedback loops and significant autonomy.
  • Help establish engineering standards, best practices, and technical culture as a key early team member.

Required Experience

  • 5 7 years of full-stack software engineering experience
  • 2+ years at a VC-backed startup
  • Experience building and scaling high-throughput distributed systems
  • Strong observability, monitoring, and reliability expertise

Tech Stack

  • TypeScript
  • Node.js
  • React
  • AWS
  • Serverless AWS (Lambda, ECS)
  • PostgreSQL
  • MySQL
  • Docker
  • LLMs / AI technologies

Education

  • BS in Computer Science
  • BS in Computer Engineering
  • Or equivalent technical degree

Preferred Qualifications

  • Backend TypeScript expertise
  • Production AI/LLM experience
  • Founder experience with demonstrated traction

Candidate Profile / Additional Information

  • Experience at both an early-stage startup (Series A or lower) and a larger-scale company.
  • Nice-to-have: experience at a big tech company such as Amazon, Apple, Meta, etc., or a tier-one startup such as Ramp, Stripe, etc.
  • Open to current or former founders as long as they had some element of real traction/product, such as paying customers, funding, etc.

Traits to Avoid

  • 3+ big tech companies with no startup experience
  • Stagnant at SDE1 level for 2+ years at a big tech company
  • Pure specialist unwilling to work across the stack

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